Condenser for a Portable Dehumidifier

ABSTRACT

A portable dehumidifier includes a plurality of microchannel condenser coils and a fan. The fan is located adjacent to an airflow outlet and is configured to generate an airflow that flows into the portable dehumidifier through an airflow inlet and out of the portable dehumidifier through the airflow outlet. The airflow flows through an evaporator and the plurality of microchannel condenser coils in order to provide dehumidification to the airflow. The plurality of microchannel condenser coils includes first and second microchannel condenser coils. The first microchannel condenser coil is located so as to receive the airflow after it has passed through the evaporator. The second microchannel condenser coil is located proximate to the first microchannel condenser coil on a side of the microchannel condenser coil so as to receive the airflow after it has passed through the first microchannel condenser coil.

TECHNICAL FIELD

This invention relates generally to dehumidification and moreparticularly to a condenser for a portable dehumidifier.

BACKGROUND OF THE INVENTION

In certain situations, it is desirable to reduce the humidity of airwithin a structure. For example, in fire and flood restorationapplications, it may be desirable to quickly remove water from areas ofa damaged structure. To accomplish this, one or more portabledehumidifiers may be placed within the structure to dehumidify the airand direct dry air toward water-damaged areas. Current dehumidifiers,however, have proven inefficient in various respects.

SUMMARY OF THE INVENTION

According to embodiments of the present disclosure, disadvantages andproblems associated with previous dehumidification systems may bereduced or eliminated.

In some embodiments, a portable dehumidifier includes two wheels, acabinet, an evaporator, a plurality of microchannel condenser coils, anda fan. The cabinet includes an airflow inlet located on a front side ofthe cabinet and an airflow outlet located on a back side of the cabinetthat is opposite the front side. The evaporator is located adjacent tothe airflow inlet. The fan is located adjacent to the airflow outlet andis configured to generate an airflow that flows into the cabinet throughthe airflow inlet and out of the cabinet through the airflow outlet. Theairflow flows through the evaporator and the plurality of microchannelcondenser coils in order to provide dehumidification to the airflow. Theplurality of microchannel condenser coils includes a first microchannelcondenser coil and a second microchannel condenser coil. The firstmicrochannel condenser coil is located so as to receive the airflowafter it has passed through the evaporator. The second microchannelcondenser coil is located proximate to the first microchannel condensercoil. The second microchannel condenser coil is located on a side of themicrochannel condenser coil so as to receive the airflow after it haspassed through the first microchannel condenser coil.

In some embodiments, a portable dehumidifier includes a cabinet, aplurality of microchannel condenser coils, and a fan. The cabinetincludes an airflow inlet and an airflow outlet. The fan is locatedadjacent to the airflow outlet and is configured to generate an airflowthat flows into the cabinet through the airflow inlet and out of thecabinet through the airflow outlet. The airflow flows through anevaporator and the plurality of microchannel condenser coils in order toprovide dehumidification to the airflow. The plurality of microchannelcondenser coils comprises a first microchannel condenser coil and asecond microchannel condenser coil. The first microchannel condensercoil is located so as to receive the airflow after it has passed throughthe evaporator. The second microchannel condenser coil is locatedproximate to the first microchannel condenser coil. The secondmicrochannel condenser coil is located on a side of the microchannelcondenser coil so as to receive the airflow after it has passed throughthe first microchannel condenser coil.

In certain embodiments, a portable dehumidifier includes a plurality ofmicrochannel condenser coils and a fan. The fan is located adjacent toan airflow outlet and is configured to generate an airflow that flowsinto the portable dehumidifier through an airflow inlet and out of theportable dehumidifier through the airflow outlet. The airflow flowsthrough an evaporator and the plurality of microchannel condenser coilsin order to provide dehumidification to the airflow. The plurality ofmicrochannel condenser coils includes first and second microchannelcondenser coils. The first microchannel condenser coil is located so asto receive the airflow after it has passed through the evaporator. Thesecond microchannel condenser coil is located proximate to the firstmicrochannel condenser coil on a side of the microchannel condenser coilso as to receive the airflow after it has passed through the firstmicrochannel condenser coil.

Certain embodiments of the present disclosure may provide one or moretechnical advantages. For example, certain embodiments provide aportable dehumidifier that is more compact and rugged than existingsystems. Certain embodiments include a retractable handle that pivots toan angle when the portable dehumidifier is being transported butretracts into the portable dehumidifier for storage. In someembodiments, the portable dehumidifier includes various stackingfeatures that allow two or more portable dehumidifiers to be securelystacked on top of each other. In some embodiments, the portabledehumidifier utilizes two microchannel condensers in series in order tomore efficiently provide dehumidification. In some embodiments, theportable dehumidifier includes a control panel that provides an LEDstatus window that may provide a status of the portable dehumidifierthat is easily discernable from a distance.

Certain embodiments of the present disclosure may include some, all, ornone of the above advantages. One or more other technical advantages maybe readily apparent to those skilled in the art from the figures,descriptions, and claims included herein.

BRIEF DESCRIPTION OF THE DRAWINGS

To provide a more complete understanding of the present invention andthe features and advantages thereof, reference is made to the followingdescription taken in conjunction with the accompanying drawings, inwhich:

FIGS. 1-2 illustrate perspective views of a portable dehumidifier,according to certain embodiments;

FIGS. 3-4 illustrate cut-away side views of the portable dehumidifier ofFIGS. 1-2, according to certain embodiments;

FIGS. 5-6 illustrate sensor locations of the portable dehumidifier ofFIGS. 1-2, according to certain embodiments;

FIG. 7 illustrates a stacking feature of the portable dehumidifier ofFIGS. 1-2, according to certain embodiments;

FIGS. 8-9 illustrate a water reservoir of the portable dehumidifier ofFIGS. 1-2, according to certain embodiments;

FIGS. 10-13 illustrate a handle mechanism of the portable dehumidifierof FIGS. 1-2, according to certain embodiments;

FIG. 14 illustrates a dehumidification system with dual condenser coilsthat may be used by the portable dehumidifier of FIGS. 1-2, according tocertain embodiments;

FIGS. 15-16 illustrate a control panel of the portable dehumidifier ofFIGS. 1-2, according to certain embodiments; and

FIG. 17 illustrates a computer system that may be used by the portabledehumidifier of FIGS. 1-2, according to certain embodiments.

DETAILED DESCRIPTION OF THE DRAWINGS

In certain situations, it is desirable to reduce the humidity of airwithin a structure. For example, in fire and flood restorationapplications, it may be desirable to remove water from a damagedstructure by placing one or more portable dehumidifiers within thestructure. Current dehumidifiers, however, have proven inadequate orinefficient in various respects.

The disclosed embodiments provide a portable dehumidifier that includesvarious features to address the inefficiencies and other issues withcurrent portable dehumidification systems. In some embodiments, aportable dehumidifier includes a retractable handle that pivots to anangle when the portable dehumidifier is being transported but retractsinto the portable dehumidifier for storage. In some embodiments, theportable dehumidifier includes various stacking features that allow twoor more portable dehumidifiers to be securely stacked on top of eachother. In some embodiments, the portable dehumidifier utilizes twomicrochannel condensers in series in order to more efficiently providedehumidification. In some embodiments, the portable dehumidifierincludes a control panel that provides an LED status bar that mayprovide a status of the portable dehumidifier that is easily discernablefrom a distance.

These and other advantages and features of certain embodiments arediscussed in more detail below in reference to FIGS. 1-17. FIGS. 1-2illustrate perspective views of certain embodiments of a portabledehumidifier; FIGS. 3-4 illustrate cut-away side views of certainembodiments of a portable dehumidifier; FIGS. 5-6 illustrate sensorlocations of certain embodiments of a portable dehumidifier; FIG. 7illustrates a stacking feature of certain embodiments of a portabledehumidifier; FIGS. 8-9 illustrate a water reservoir of certainembodiments of a portable dehumidifier; FIGS. 10-13 illustrate a handlemechanism of certain embodiments of a portable dehumidifier; FIG. 14illustrates a dehumidification system with dual condenser coils that maybe used by certain embodiments of a portable dehumidifier; FIGS. 15-16illustrate a control panel of certain embodiments of a portabledehumidifier; and FIG. 17 illustrates a computer system of certainembodiments of a portable dehumidifier.

FIGS. 1-4 illustrate perspective and cut-away views of a portabledehumidifier 100, according to certain embodiments. In some embodiments,portable dehumidifier 100 includes a cabinet 105, an airflow inlet 110,an airflow outlet 115, two or more wheels 130, and a handle 135. While aspecific arrangement of these and other components of portabledehumidifier 100 are illustrated in these figures, other embodiments mayhave other arrangements and may have more or fewer components than thoseillustrated.

In general, portable dehumidifier 100 provides dehumidification to anarea (e.g., a room, a floor, etc.) by moving air through portabledehumidifier 100. To dehumidify air, portable dehumidifier 100 generatesan airflow 101 that enters cabinet 105 via airflow inlet 110, travelsthrough a dehumidification system (e.g., dehumidification system 1400described below) where it is dried, and then exits cabinet 105 viaairflow outlet 115. Water removed from airflow 101 via thedehumidification system may be captured within a water reservoir ofportable dehumidifier 100 where it may be later removed via, forexample, a drain 155. A particular embodiment of a water reservoir isdescribed in more detail below in reference to FIGS. 8-9.

Cabinet 105 may be any appropriate shape and size. In some embodiments,cabinet 105 includes multiple sides 106. For example, some embodimentsof cabinet 105 include a top side 106A, a bottom side 106B, a front side106C, a back side 106D, a right side 106E, and a left side 106F asillustrated in the figures. In some embodiments, airflow inlet 110 is onfront side 106C and airflow outlet 115 is on back side 106D.

In some embodiments, all or a portion of cabinet 105 is removable formaintenance and service to portable dehumidifier 100. For example,cabinet 105 may include separate top and lower portions that are coupledto each other using any appropriate fasteners (e.g., screws, bolts,etc.). As illustrated in FIG. 5, the top portion of cabinet 105 may beeasily removed by removing a certain number of fasteners that areaccessible from the outside of cabinet 105. In some embodiments, thefasteners used to attach the top portion of cabinet 105 to its lowerportion may be captive in the lower portion so that the fasteners maynot be lost when the upper portion is removed for maintenance orservice.

Airflow inlet 110 is generally any opening in which airflow 101 entersportable dehumidifier 100. In some embodiments, airflow inlet 110 issquare or rectangular in shape as illustrated. In other embodiments,airflow inlet 110 may have any other appropriate shape or dimensions. Insome embodiments, airflow inlet 110 includes a grate or grill that isformed out of geometric shapes. For example, some embodiments of airflowinlet 110 include a grill formed from hexagons, octagons, and the like.In some embodiments, a removable air filter may be installed proximateto airflow inlet 110 to filter airflow 101 as it enters portabledehumidifier 100. In some embodiments, airflow inlet 110 is located onfront side 106C as illustrated in the figures, but may be in any otherappropriate location on other embodiments of portable dehumidifier 100.

Airflow outlet 115 is generally any opening in which airflow 101 exitsportable dehumidifier 100 after it has passed through a dehumidificationsystem of portable dehumidifier 100 such as dehumidification system 1400for dehumidification. Similar to airflow inlet 110, airflow outlet 115includes a grate or grill that is formed out of geometric shapes such ashexagons, octagons, and the like. Airflow outlet 115 may be square orrectangular in shape, but may have any other appropriate shape ordimensions. In some embodiments, airflow outlet 115 is located on backside 106D as illustrated in the figures, but may be in any otherappropriate location on other embodiments of portable dehumidifier 100.

Portable dehumidifier 100 includes a fan 117 that, when activated, drawsairflow 101 into portable dehumidifier 100 via airflow inlet 110, causesairflow 101 to flow through a dehumidification system such asdehumidification system 1400, and exhausts airflow 101 out of airflowoutlet 115. In some embodiments, fan 117 is located within cabinet 105proximate to airflow outlet 115 as illustrated in FIGS. 3-4. Fan 117 maybe any type of air mover (e.g., axial fan, forward inclined impeller,backward inclined impeller, etc.) that is configured to generate airflow101 that flows through portable dehumidifier 100 for dehumidificationand exits portable dehumidifier 100 through airflow outlet 115.

Embodiments of portable dehumidifier 100 may include two or more wheels130. In some embodiments, portable dehumidifier 100 includes two wheels130 as illustrated that permit portable dehumidifier 100 to be tiltedtowards back side 106D and easily transported to a new location. Wheels130 may be of any size and be made of any appropriate materials.

Some embodiments of portable dehumidifier 100 may include a handle 135.Handle 135 may be used to tilt portable dehumidifier 100 towards backside 106D and rolled to a new location. Particular embodiments of handle135 and a handle mechanism 1100 are described below in reference toFIGS. 10-13.

Embodiments of portable dehumidifier 100 also include a control panel140 located in cabinet 105. In general, control panel 140 providesvarious controls for an operator to control certain functions ofportable dehumidifier 100. Certain embodiments of control panel 140 arediscussed in more detail below in reference to FIGS. 15-16. Whilecontrol panel 140 is located on top side 106A close to back side 106D insome embodiments, control panel 140 may be located in any appropriatelocation on cabinet 105.

In some embodiments, portable dehumidifier 100 includes a storagecompartment 150 within cabinet 105. In general, storage compartment 150provides a convenient location for operators to store hoses, cords, andother items needed for the operation of portable dehumidifier 100. Insome embodiments, storage compartment 150 is an open pocket located ontop side 106A of cabinet 105 as illustrated. In other embodiments,storage compartment 150 may be in any other appropriate location oncabinet 105 and may include one or more doors or panels to enclosestorage compartment 150. Storage compartment 150 allows the operator tostore needed accessories (e.g., cords, hoses, etc.) for each job withoutlimiting the ability to stack and store portable dehumidifier 100 in thesmallest possible volume during transport.

Portable dehumidifier 100 includes various components to providedehumidification to airflow 101. Portable dehumidifier 100 may includemultiple condenser coils 310, a compressor 320, and an evaporator 330.Particular embodiments of condenser coils 310 are described in moredetail below in reference to FIG. 14. These and other internalcomponents of portable dehumidifier 100 are uniquely arranged so as tominimize the size of portable dehumidifier 100. In some embodiments,evaporator 330 is located proximate to airflow inlet 110 as illustrated.In some embodiments, a removable filter may be provided betweenevaporator 330 and airflow inlet 110 to filter airflow 101 before itenters evaporator 330. In some embodiments, compressor 320 may belocated within airflow 101 between evaporator 330 and condenser coils310, as illustrated. This may provide cooling for compressor 320 andfurther improve the efficiency of portable dehumidifier 100. Condensercoils 310 may be located close to wheels 130 and back side 106D ofcabinet 105 as illustrated. Fan 117 may be installed behind condensercoils 310 and before airflow outlet 115.

FIGS. 5-6 illustrate locations of sensors 510 of portable dehumidifier100, according to certain embodiments. Sensors 510 may include a frontsensor 510A and a rear sensor 510B. As illustrated in FIG. 5, frontsensor 510A may be installed between evaporator 330 and airflow inlet110 so that it may sense airflow 101 before it enters evaporator 330. Insome embodiments, front sensor 510A may be located between evaporator330 and a removable filter (not illustrated) that is immediately behindairflow inlet 110 within cabinet 105. As illustrated in FIG. 6, rearsensor 510B may be installed in any appropriate location within airflow101 after fan 117. In some embodiments, rear sensor 510B may beinstalled on a sensor bracket 610 that is behind fan 117 but beforeairflow outlet 115 as illustrated. Sensor bracket 610 may be made of anyappropriate material such as metal and may have one or more cutouts asshown to allow airflow 101 to pass through sensor bracket 610 and intorear sensor 510B. Sensors 510 may be any appropriate sensors such asthermometers, humidistats, pressure sensors, and the like.

FIG. 7 illustrates a stacking feature of portable dehumidifier 100,according to certain embodiments. In some embodiments, cabinet 105includes stacking recesses 160 and cabinet protrusions 170 that allowportable dehumidifiers 100 to stack with one another. For example, twoor more portable dehumidifiers 100 may be stacked on one another fortransport and storage. To accomplish this, certain embodiments ofportable dehumidifier 100 include two rear stacking recesses 160A, twofront stacking recesses 160B, and two cabinet protrusions 170. Ingeneral, rear stacking recesses 160A are located on the top edge ofcabinet 105 near back side 106D of cabinet 105 and front stackingrecesses 106B are located on the top edge of cabinet 105 near front side106C of cabinet 105 as illustrated. Stacking recesses 160 includevarious angled recesses and edges that permit wheels 130 and cabinetprotrusions 170 from another portable dehumidifier 100 to nest withinthem. For example, front stacking recesses 160B permit cabinetprotrusions 170 of another portable dehumidifier 100 to nest withinthem, and rear stacking recesses 160A permit wheels 130 of anotherportable dehumidifier 100 to nest within them. In some embodiments, theshapes of cabinet protrusions 170 match or are complementary to rearstacking recesses 160B so that when one portable dehumidifier 100 isstacked on top of another portable dehumidifier 100, the portabledehumidifier 100 on top may be locked into place and prevented fromshifting forward or backward. As a result, stacked portabledehumidifiers 100 may be stable during transport and storage.

FIGS. 8-9 illustrate a water reservoir 920 of portable dehumidifier 100,according to certain embodiments. In general, water reservoir 920collects water that is removed from airflow 101 by portable dehumidifier100. In some embodiments, drain 155 is coupled to water reservoir 920and permits an operator to manually remove collected water from waterreservoir 920. For example, an operator may attach a hose to drain 155and open a valve on drain 155 in order for collected water to drain fromwater reservoir 920 through the hose. In some embodiments, a water pump910 may be included within or proximate to water reservoir 920. Waterpump 910 may be any electric pump that pumps collected water out ofwater reservoir 920 (e.g., through drain 155).

In some embodiments, water reservoir 920 is any appropriate tank, basin,container, or area within cabinet 105 to collect and hold water that isremoved from airflow 101. In some embodiments, water reservoir 920 isformed using one or more walls or panels as illustrated in FIGS. 8-9 andmay include a top that is at least partially open in order to allowwater to collect in water reservoir 920. For example, water reservoir920 may be located at least partially below evaporator 330 where itsopen top allows it to capture water falling from evaporator 330. In suchembodiments, water within water reservoir 920 may collect in a corner ofwater reservoir 920 towards or proximate to condenser coils 310 whenportable dehumidifier 100 is tilted and moved using wheels 130. This mayoccur, for example, in situations where the operator has not had anopportunity to fully drain water from water reservoir 920 before havingto transport portable dehumidifier 100 to another location. To alleviatewater from spilling out of water reservoir 920 when portabledehumidifier 100 is tilted about wheels 130, some embodiments include acompressor bracket 1010 as illustrated in FIG. 10. Compressor bracket1010 may be attached to compressor 320 and any portion of a wall ofwater reservoir 920 or cabinet 105 using any appropriate fastener (e.g.,screw, bolt, etc.). In general, compressor bracket 1010 covers a frontand top portion of water reservoir 920 (e.g., a portion of waterreservoir 920 proximate to condenser coils 310), as illustrated in orderto prevent water within water reservoir 920 from spilling out of waterreservoir 920 when portable dehumidifier 100 is tilted about wheels 130.In some embodiments, a lower surface of compressor bracket 1010 mayinclude a seal or any material such as rubber in order to form a sealwith water reservoir 920. Compressor bracket 1010 may have anyappropriate shape and be made of any appropriate material. In someembodiments, compressor bracket 1010 is made of metal and is generallyan L-shape as illustrated. The L-shape may include a first portion thatattaches to compressor 320 and a second portion that may be orthogonalto the first portion and forms a water barrier or seal over a portion ofwater reservoir 920 as illustrated.

FIGS. 10-13 illustrate a handle mechanism 1100 that may be used byportable dehumidifier 100, according to certain embodiments. In general,handle mechanism 1100 permits handle 135 to slide into and out ofcabinet 105 and to tilt upwards a certain degree so that an operator mayeasily transport portable dehumidifier 100 using wheels 130. Handlemechanism 1100 permits handle 135 to be retracted into cabinet 105(FIGS. 1-2) or to be extended out of cabinet 105 (FIG. 10).

In some embodiments, handle mechanism 1100 includes a cross member 1110and two sliding members 1120. Cross member 1110 is any appropriate shapethat allows for an operator to hold cross member 1100 while transportingportable dehumidifier 100. In some embodiments, cross member 1110includes a material suitable for gripping by an operator (e.g., anon-slip material such as rubber or foam). In some embodiments, crossmember 1110 may be attached to sliding members 1120 using anyappropriate fastener (e.g., screws, bolts, etc.) or may be permanentlyattached to sliding members 1120 using, for example, welding. Crossmember 1110 and sliding members 1120 may be made of any appropriatematerial such as metal.

In some embodiments, handle mechanism 1100 includes bushing plates 1130and brackets 1140. In some embodiments, bushing plates 1130 are made ofplastic and brackets 1140 are made of metal. Bushing plates 1130generally provide guides for sliding members 1120 to slide into and outof cabinet 105. Brackets 1140 attach to bushing plates 1130 and preventsliding members 1120 from disengaging from bushing plates 1130. Brackets1140 may be coupled to bushing plates 1130 using, for example, fasteners1170 (e.g., bolts, screws, etc.). In some embodiments, fasteners such asfasteners 1170 also attach bushing plates 1130 to cabinet 105.

In some embodiments, sliding members 1120 include multiple pins 1150 forengaging with bushing plates 1130 and brackets 1140. For example,inward-facing front pins 1150A of sliding members 1120 engage withnotches 1135 of bushing plates 1130 when handle 135 is retracted intocabinet 105. Notches 1135 and front pins 1150A provide a stop for handle135 so that it may not be inserted too far within cabinet 105. Slidingmembers 1120 may also include outward-facing rear pins 1150B.Outward-facing rear pins 1150B of sliding members 1120 engage withnotches 1145 of brackets 1140 when handle 135 is fully extended out ofcabinet 105. Notches 1145 and rear pins 1150B provide a stop for handle135 so that it may not be extended too far out of cabinet 105.

In some embodiments, bushing plates 1130 include multiple protrusions1160 as illustrated. Protrusions 1160 generally keep sliding members1120 engaged with bushing plates 1130 and keep them aligned withinbushing plates 1130. Protrusions 1160 may be finger-shaped in someembodiments as illustrated, but may be other shapes and sizes in otherembodiments. In addition, some embodiments of bushing plates 1130 mayinclude more or fewer protrusions 1160 than illustrated. In someembodiments, bushing plates 1130 may include angled transport stops 1310that permit handle 135 to pivot upwards when it is in its extendedposition. In those embodiments, bushing plates 1130 may include one ormore protrusions 1160 that are positioned to provide guides for slidingmembers 1120 as they move into transport stops 1310. For example, asillustrated in FIGS. 12-13, bushing plates 1130 may include oneprotrusion 1160 that extends downward from transport stop 1310 and oneprotrusion 1160 that extends upwards towards transport stop 1310.

In some embodiments, bushing plates 1130 may include multiple bumps 1330as illustrated in FIG. 13. Bumps 1330 generally contact sliding members1120 and provide pressure and resistance on handle 135 as it slides intoand out of cabinet 105. Bumps 1330 may be any shape or size, and bushingplates 1130 may include any number of bumps 1330.

As mentioned above, some embodiments of bushing plates 1130 may includetransport stop 1310 that permits handle 135 to pivot upwards when it isfully extended. This may provide a more ergonomical and comfortableposition for handle 135 for an operator to transport portabledehumidifier 100. In some embodiments, transport stop 1310 may be at anyangle to the bottom rail of bushing plates 1130. In some embodiments,for example, the angle between transport stop 1310 and the bottom railof bushing plates 1130 is between 25-30 degrees. This may result inhandle 135 having a tilt angle with respect to level ground of between25-30 degrees. In other embodiments, any other appropriate angle fortransport stop 1310 may be used.

In some embodiments, bushing plates 1130 may include a transport lock1320 that locks handle 135 into its tilted position as shown in FIG. 13.In such embodiments, sliding members 1120 may include an end 1125 with ashape that matches transport lock 1320 so that end 1125 fits intotransport lock 1320 when handle 135 has been moved into its tiltedposition. This may lock handle 135 in its tilted position and prevent itfrom retracting back into cabinet 105. Transport lock 1320 may have anyappropriate shape (e.g., a v-shaped notch), and end 1125 of slidingmembers 1120 may have any appropriate corresponding shape, such as thatillustrated in FIG. 13.

In operation, sliding members 1120 of handle 135 slide within bushingplates 1130 along bumps 1330. Protrusions 1160 sandwich sliding members1120 inside bushing plates 1130 and prevent sliding members 1120 frombecoming disengaged with bushing plates 1130. When handle 135 has beenpulled out of cabinet 105 to its fully extended position, rear pins1150B become engaged with notches 1145 of brackets 1140. This preventshandle 135 from being extended any further and gives handle 135 a pointin which to pivot handle 135. Handle 135 may then be pivoted upwarduntil sliding members 1120 contact transport stop 1310. Once thisoccurs, ends 1125 of sliding members 1120 slide into transport locks1320, thus locking handle 135 it its pivoted position. When the operatorwishes to store portable dehumidifier 100, handle 135 may be disengagedfrom transport lock 1320 and slid back into cabinet 105 along bushingplates 1130. When handle 135 is fully retracted, pins front 1150A engagewith notches 1135 of bushing plates 1130, thus preventing handle 135from being further retracted into cabinet 105.

FIG. 14 illustrates a dehumidification system 1400 that includes dualcondenser coils 310 that may be used by portable dehumidifier 100,according to certain embodiments. Dehumidification system 1400 includestwo condenser coils 310: first condenser coil 310A and second condensercoil 310B. First condenser coil 310A is located closest to compressor320 and evaporator 330, while second condenser coil 310B is locatedclosest to fan 117 and airflow outlet 115. Second condenser coil 310B isconnected to compressor 320 via a superheated vapor line 1410. Firstcondenser coil 310A is connected to evaporator 330 via a subcooledliquid line 1430. In some embodiments, an expansion valve is included onsubcooled liquid line 1430 between first condenser coil 310A andevaporator 330. First condenser coil 310A and second condenser coil 310Bare connected via a condenser connection line 1420. Condenser connectionline 1420 connects an output of second condenser coil 310B with an inputof first condenser coil 310A. In other words, condenser coils 310 areconnected in series, which provides many advantages as discussed in moredetail below.

Condenser coils 310 are microchannel condensers that are made ofaluminum in some embodiments. In general, microchannel condensersprovide numerous features including a high heat transfer coefficient, alow air-side pressure restriction, and a compact design (compared toother solutions such as finned tub exchangers). These and other featuresmake microchannel condensers good options for condensers in airconditioning systems where inlet air temperatures are high and airflowis high with low fan power. However, in a dehumidifier, the primary airside pressure drop occurs in the evaporator, and reducing condenser airrestriction does not increase airflow significantly. Also, the airtemperature upstream of the condenser is typically relatively low, oftenbeing below 60° F. The air temperature leaving the condenser istypically is over 100° F. The air temperature across the condensertypically increases over 40° F. Using this low temperature air streamefficiently is the key to a good design. In dehumidifier designs, therefrigeration system typically needs to have at least 20° F. subcoolingwhen a finned tube condenser is used. Since a normal microchannelcondenser does not provide cross counter flow, it is very difficult toget 20° F. subcooling. The weakness of micro-channel condenser (e.g., nocross counter flow) becomes significant when air temperature rises over40° F. across the condenser. Due to this, a typical microchannelcondenser is not a good condenser for a dehumidifier. To overcome theseand other issues, embodiments of portable dehumidifier 100 include twocondenser coils 310 connected in series as described herein. In thisconfiguration, the pressure drop of two microchannel condenser coils 310is still lower than that of a single finned tube coil. In addition,since a microchannel coil is thinner than a multi-row finned tube coil,the thickness of two microchannel condenser coils 310 is less than anequivalent single finned tube coil. By using two or more microchannelcondenser coils 310 in series to make a cross counter flow condenser,more than 20° F. of subcooling may be achieved with a reasonableapproach temperature when inlet air temperature is below 60° F.Furthermore, aluminum is typically less costly than copper, so the costof a dual microchannel aluminum condenser is less than a single finnedcopper tube condenser.

In operation, refrigerant flows through dehumidification system 1400from evaporator 330 into compressor 320, from compressor 320 into secondcondenser coil 310B via superheated vapor line 1410, from secondcondenser coil 310B into first condenser coil 310A via condenserconnection line 1420, from first condenser coil 310A back to evaporator330 (through an expansion valve in some embodiments) via subcooledliquid line 1430. The unique configuration of dehumidification system1400 allows the refrigerant to be managed based on the direction ofairflow 101 and temperature. That is, the coldest air (i.e., airflow 101when it first hits first condenser coil 310A) subcools the liquidrefrigerant within first condenser coil 310A, and the hottest air (i.e.,airflow 101 when it first hits second condenser coil 310B after leavingfirst condenser coil 310A) de-superheats the vapor refrigerant as itpasses through second condenser coil 310B.

While a particular dehumidification system 1400 has been described ashaving two condenser coils 310, other embodiments may have more than twocondenser coils 310. For example, other embodiments of dehumidificationsystem 1400 may have three or four condenser coils 310. In suchembodiments, condenser coils 310 are connected in series using multiplecondenser connection lines 1420 as described above.

FIGS. 15-16 illustrate a control panel 140 of portable dehumidifier 100,according to certain embodiments. In some embodiments, control panel 140is located on top side 106A of cabinet 105 near airflow outlet 115. Insome embodiments, control panel 140 is mounted at an angle asillustrated to allow for easy viewing of control panel 140 from adistance. In some embodiments, control panel 140 includes a display1610, a power button 1620, a purge button 1630, a next button 1640, aset button 1650, and a status bar 1660. In some embodiments, controlpanel 140 may include or be communicatively coupled with a computersystem 1700, as described in reference to FIG. 17 below. While aparticular arrangement and quantity of these items are illustrated inFIGS. 15-16, other embodiments may have any other appropriatearrangement and quantity of these items.

In some embodiments, display 1610 is a four-line backlit LED displaythat provides the operator with important information about portabledehumidifier 100. For example, display 1610 may provide temperature andhumidity of airflow 101 as it enters portable dehumidifier 100 (i.e.,“In: 81° 28%”). This information may be obtained from sensor 510A asdescribed above. Display 1610 may provide temperature and humidity ofairflow 101 as it exits portable dehumidifier 100 (i.e., “Out: 96° 8%”).This information may be obtained from sensor 510B as described above.Display 1610 may also provide runtime and performance information (e.g.,how long it has been operating, how much water is has removed, etc.) forportable dehumidifier 100 (i.e., “Hrs: 2.5 J 25.9 L”), as well as graindepression (i.e., “GD: 10 GPP”). This and other important informationmay be displayed on a “home” screen on control panel 140, which may bedisplayed at startup and at most times when portable dehumidifier 100 isoperating.

In some embodiments, control panel 140 includes power button 1620 whichturns portable dehumidifier 100 on and off. Control panel 140 may alsoinclude purge button 1630, which causes water pump 910 to activate andpump water out of water reservoir 920 of portable dehumidifier 100(e.g., via drain 155). Next button 1640 and set button 1650 provide userinterfaces for the user to select various options for portabledehumidifier 100.

For example, the operator may select: temperature units (i.e., F or C);humidity units (e.g., relative humidity or grains); shutdown variables(e.g., after a certain amount of time, a certain temperature, a certainamount of water removed, etc.); calibration options for sensors 510;various diagnostic modes; and the like.

In some embodiments, control panel 140 includes status bar 1660 whichmay provide the operator a convenient and efficient way to view thestatus of portable dehumidifier 100 from a distance. For example, someembodiments of status bar 1660 include various LEDs or other lights thatenable status bar 1660 to light up with various colors. For example,status bar 1660 may be red, blue, or green to indicate the currentstatus or health of portable dehumidifier 100. A “green” status bar 1660may indicate, for example, that portable dehumidifier 100 is operatingnormally and does not currently need attention. A “red” status bar 1660may indicate, for example, that portable dehumidifier 100 is notoperating normally and currently needs attention (e.g, water reservoir920 is full and needs to be drained). A “blue” status bar 1660 mayindicate, for example, that portable dehumidifier 100 is currentlydefrosting. This may allow an operator to quickly tell if any portabledehumidifier 100 needs attention. For example, an operator may placemultiple portable dehumidifiers 100 in a particular room of a residenceto remove water. The operator may simply walk into the room and quicklynotice if any status bars 1660 are “red” in order to tell if anyportable dehumidifiers 100 need attention. This saves costs by reducingthe amount of time needed to monitor portable dehumidifiers 100 byoperators.

Although a particular implementation of portable dehumidifier 100 isillustrated and primarily described, the present disclosure contemplatesany suitable implementation of portable dehumidifier 100, according toparticular needs. Moreover, although various components of portabledehumidifier 100 have been depicted as being located at particularpositions, the present disclosure contemplates those components beingpositioned at any suitable location, according to particular needs.

FIG. 17 illustrates an example computer system 1700. In particularembodiments, one or more computer systems 1700 perform one or more stepsof one or more methods described or illustrated herein. In particularembodiments, one or more computer systems 1700 provide functionalitydescribed or illustrated herein. In particular embodiments, softwarerunning on one or more computer systems 1700 performs one or more stepsof one or more methods described or illustrated herein or providesfunctionality described or illustrated herein. Particular embodimentsinclude one or more portions of one or more computer systems 1700.Herein, reference to a computer system may encompass a computing device,and vice versa, where appropriate. Moreover, reference to a computersystem may encompass one or more computer systems, where appropriate.

This disclosure contemplates any suitable number of computer systems1700. This disclosure contemplates computer system 1700 taking anysuitable physical form. As example and not by way of limitation,computer system 1700 may be an embedded computer system, asystem-on-chip (SOC), a single-board computer system (SBC) (such as, forexample, a computer-on-module (COM) or system-on-module (SOM)), adesktop computer system, a laptop or notebook computer system, aninteractive kiosk, a mainframe, a mesh of computer systems, a mobiletelephone, a personal digital assistant (PDA), a server, a tabletcomputer system, an augmented/virtual reality device, or a combinationof two or more of these. Where appropriate, computer system 1700 mayinclude one or more computer systems 1700; be unitary or distributed;span multiple locations; span multiple machines; span multiple datacenters; or reside in a cloud, which may include one or more cloudcomponents in one or more networks. Where appropriate, one or morecomputer systems 1700 may perform without substantial spatial ortemporal limitation one or more steps of one or more methods describedor illustrated herein. As an example and not by way of limitation, oneor more computer systems 1700 may perform in real time or in batch modeone or more steps of one or more methods described or illustratedherein. One or more computer systems 1700 may perform at different timesor at different locations one or more steps of one or more methodsdescribed or illustrated herein, where appropriate.

In particular embodiments, computer system 1700 includes a processor1702, memory 1704, storage 1706, an input/output (I/O) interface 1708, acommunication interface 1710, and a bus 1712. Although this disclosuredescribes and illustrates a particular computer system having aparticular number of particular components in a particular arrangement,this disclosure contemplates any suitable computer system having anysuitable number of any suitable components in any suitable arrangement.

In particular embodiments, processor 1702 includes hardware forexecuting instructions, such as those making up a computer program. Asan example and not by way of limitation, to execute instructions,processor 1702 may retrieve (or fetch) the instructions from an internalregister, an internal cache, memory 1704, or storage 1706; decode andexecute them; and then write one or more results to an internalregister, an internal cache, memory 1704, or storage 1706. In particularembodiments, processor 1702 may include one or more internal caches fordata, instructions, or addresses. This disclosure contemplates processor1702 including any suitable number of any suitable internal caches,where appropriate. As an example and not by way of limitation, processor1702 may include one or more instruction caches, one or more datacaches, and one or more translation lookaside buffers (TLBs).Instructions in the instruction caches may be copies of instructions inmemory 1704 or storage 1706, and the instruction caches may speed upretrieval of those instructions by processor 1702. Data in the datacaches may be copies of data in memory 1704 or storage 1706 forinstructions executing at processor 1702 to operate on; the results ofprevious instructions executed at processor 1702 for access bysubsequent instructions executing at processor 1702 or for writing tomemory 1704 or storage 1706; or other suitable data. The data caches mayspeed up read or write operations by processor 1702. The TLBs may speedup virtual-address translation for processor 1702. In particularembodiments, processor 1702 may include one or more internal registersfor data, instructions, or addresses. This disclosure contemplatesprocessor 1702 including any suitable number of any suitable internalregisters, where appropriate. Where appropriate, processor 1702 mayinclude one or more arithmetic logic units (ALUs); be a multi-coreprocessor; or include one or more processors 1702. Although thisdisclosure describes and illustrates a particular processor, thisdisclosure contemplates any suitable processor.

In particular embodiments, memory 1704 includes main memory for storinginstructions for processor 1702 to execute or data for processor 1702 tooperate on. As an example and not by way of limitation, computer system1700 may load instructions from storage 1706 or another source (such as,for example, another computer system 1700) to memory 1704. Processor1702 may then load the instructions from memory 1704 to an internalregister or internal cache. To execute the instructions, processor 1702may retrieve the instructions from the internal register or internalcache and decode them. During or after execution of the instructions,processor 1702 may write one or more results (which may be intermediateor final results) to the internal register or internal cache. Processor1702 may then write one or more of those results to memory 1704. Inparticular embodiments, processor 1702 executes only instructions in oneor more internal registers or internal caches or in memory 1704 (asopposed to storage 1706 or elsewhere) and operates only on data in oneor more internal registers or internal caches or in memory 1704 (asopposed to storage 1706 or elsewhere). One or more memory buses (whichmay each include an address bus and a data bus) may couple processor1702 to memory 1704. Bus 1712 may include one or more memory buses, asdescribed below. In particular embodiments, one or more memorymanagement units (MMUs) reside between processor 1702 and memory 1704and facilitate accesses to memory 1704 requested by processor 1702. Inparticular embodiments, memory 1704 includes random access memory (RAM).This RAM may be volatile memory, where appropriate. Where appropriate,this RAM may be dynamic RAM (DRAM) or static RAM (SRAM). Moreover, whereappropriate, this RAM may be single-ported or multi-ported RAM. Thisdisclosure contemplates any suitable RAM. Memory 1704 may include one ormore memories 1704, where appropriate. Although this disclosuredescribes and illustrates particular memory, this disclosurecontemplates any suitable memory.

In particular embodiments, storage 1706 includes mass storage for dataor instructions. As an example and not by way of limitation, storage1706 may include a hard disk drive (HDD), a floppy disk drive, flashmemory, an optical disc, a magneto-optical disc, magnetic tape, or aUniversal Serial Bus (USB) drive or a combination of two or more ofthese. Storage 1706 may include removable or non-removable (or fixed)media, where appropriate. Storage 1706 may be internal or external tocomputer system 1700, where appropriate. In particular embodiments,storage 1706 is non-volatile, solid-state memory. In particularembodiments, storage 1706 includes read-only memory (ROM). Whereappropriate, this ROM may be mask-programmed ROM, programmable ROM(PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM),electrically alterable ROM (EAROM), or flash memory or a combination oftwo or more of these. This disclosure contemplates mass storage 1706taking any suitable physical form. Storage 1706 may include one or morestorage control units facilitating communication between processor 1702and storage 1706, where appropriate. Where appropriate, storage 1706 mayinclude one or more storages 1706. Although this disclosure describesand illustrates particular storage, this disclosure contemplates anysuitable storage.

In particular embodiments, I/O interface 1708 includes hardware,software, or both, providing one or more interfaces for communicationbetween computer system 1700 and one or more I/O devices. Computersystem 1700 may include one or more of these I/O devices, whereappropriate. One or more of these I/O devices may enable communicationbetween a person and computer system 1700. As an example and not by wayof limitation, an I/O device may include a keyboard, keypad, microphone,monitor, mouse, printer, scanner, speaker, still camera, stylus, tablet,touch screen, trackball, video camera, another suitable I/O device or acombination of two or more of these. An I/O device may include one ormore sensors. This disclosure contemplates any suitable I/O devices andany suitable I/O interfaces 1708 for them. Where appropriate, I/Ointerface 1708 may include one or more device or software driversenabling processor 1702 to drive one or more of these I/O devices. I/Ointerface 1708 may include one or more I/O interfaces 1708, whereappropriate. Although this disclosure describes and illustrates aparticular I/O interface, this disclosure contemplates any suitable I/Ointerface.

In particular embodiments, communication interface 1710 includeshardware, software, or both providing one or more interfaces forcommunication (such as, for example, packet-based communication) betweencomputer system 1700 and one or more other computer systems 1700 or oneor more networks. As an example and not by way of limitation,communication interface 1710 may include a network interface controller(NIC) or network adapter for communicating with an Ethernet or otherwire-based network or a wireless NIC (WNIC) or wireless adapter forcommunicating with a wireless network, such as a WI-FI network. Thisdisclosure contemplates any suitable network and any suitablecommunication interface 1710 for it. As an example and not by way oflimitation, computer system 1700 may communicate with an ad hoc network,a personal area network (PAN), a local area network (LAN), a wide areanetwork (WAN), a metropolitan area network (MAN), or one or moreportions of the Internet or a combination of two or more of these. Oneor more portions of one or more of these networks may be wired orwireless. As an example, computer system 1700 may communicate with awireless PAN (WPAN) (such as, for example, a BLUETOOTH WPAN), a WI-FInetwork, a WI-MAX network, a cellular telephone network (such as, forexample, a Global System for Mobile Communications (GSM) network), orother suitable wireless network or a combination of two or more ofthese. Computer system 1700 may include any suitable communicationinterface 1710 for any of these networks, where appropriate.Communication interface 1710 may include one or more communicationinterfaces 1710, where appropriate. Although this disclosure describesand illustrates a particular communication interface, this disclosurecontemplates any suitable communication interface.

In particular embodiments, bus 1712 includes hardware, software, or bothcoupling components of computer system 1700 to each other. As an exampleand not by way of limitation, bus 1712 may include an AcceleratedGraphics Port (AGP) or other graphics bus, an Enhanced Industry StandardArchitecture (EISA) bus, a front-side bus (FSB), a HYPERTRANSPORT (HT)interconnect, an Industry Standard Architecture (ISA) bus, an INFINIBANDinterconnect, a low-pin-count (LPC) bus, a memory bus, a Micro ChannelArchitecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, aPCI-Express (PCIe) bus, a serial advanced technology attachment (SATA)bus, a Video Electronics Standards Association local (VLB) bus, oranother suitable bus or a combination of two or more of these. Bus 1712may include one or more buses 1712, where appropriate. Although thisdisclosure describes and illustrates a particular bus, this disclosurecontemplates any suitable bus or interconnect.

Herein, a computer-readable non-transitory storage medium or media mayinclude one or more semiconductor-based or other integrated circuits(ICs) (such, as for example, field-programmable gate arrays (FPGAs) orapplication-specific ICs (ASICs)), hard disk drives (HDDs), hybrid harddrives (HHDs), optical discs, optical disc drives (ODDs),magneto-optical discs, magneto-optical drives, floppy diskettes, floppydisk drives (FDDs), magnetic tapes, solid-state drives (SSDs),RAM-drives, SECURE DIGITAL cards or drives, any other suitablecomputer-readable non-transitory storage media, or any suitablecombination of two or more of these, where appropriate. Acomputer-readable non-transitory storage medium may be volatile,non-volatile, or a combination of volatile and non-volatile, whereappropriate.

Herein, “or” is inclusive and not exclusive, unless expressly indicatedotherwise or indicated otherwise by context. Therefore, herein, “A or B”means “A, B, or both,” unless expressly indicated otherwise or indicatedotherwise by context. Moreover, “and” is both joint and several, unlessexpressly indicated otherwise or indicated otherwise by context.Therefore, herein, “A and B” means “A and B, jointly or severally,”unless expressly indicated otherwise or indicated otherwise by context.

The scope of this disclosure encompasses all changes, substitutions,variations, alterations, and modifications to the example embodimentsdescribed or illustrated herein that a person having ordinary skill inthe art would comprehend. The scope of this disclosure is not limited tothe example embodiments described or illustrated herein. Moreover,although this disclosure describes and illustrates respectiveembodiments herein as including particular components, elements,feature, functions, operations, or steps, any of these embodiments mayinclude any combination or permutation of any of the components,elements, features, functions, operations, or steps described orillustrated anywhere herein that a person having ordinary skill in theart would comprehend. Furthermore, reference in the appended claims toan apparatus or system or a component of an apparatus or system beingadapted to, arranged to, capable of, configured to, enabled to, operableto, or operative to perform a particular function encompasses thatapparatus, system, component, whether or not it or that particularfunction is activated, turned on, or unlocked, as long as thatapparatus, system, or component is so adapted, arranged, capable,configured, enabled, operable, or operative. Additionally, although thisdisclosure describes or illustrates particular embodiments as providingparticular advantages, particular embodiments may provide none, some, orall of these advantages.

1. A portable dehumidifier, comprising: two wheels; a cabinetcomprising: an airflow inlet located on a front side of the cabinet; anairflow outlet located on a back side of the cabinet that is oppositethe front side; an evaporator located adjacent to the airflow inlet; acompressor coupled to the evaporator; a first microchannel condensercoil coupled to the evaporator via a subcooled liquid line; and a secondmicrochannel condenser coil coupled to the compressor via a superheatedvapor line and to the first microchannel condenser coil via a condenserconnection line; wherein the compressor is configured to receiverefrigerant from the evaporator, the second condenser coil is configuredto receive the refrigerant from the compressor via the superheated vaporline, the first condenser coil is configured to receive the refrigerantfrom the first condenser coil via the condenser connection line, and theevaporator is configured to receive the refrigerant from the firstcondenser coil via the subcooled liquid line; and a fan located adjacentto the airflow outlet, the fan configured to generate an airflow thatflows into the cabinet through the airflow inlet and out of the cabinetthrough the airflow outlet, the airflow flowing through the evaporatorand the first and second microchannel condenser coils in order toprovide dehumidification to the airflow.
 2. The portable dehumidifier ofclaim 1, wherein an input of the first microchannel condenser coilreceives a refrigerant flow from an output of the second microchannelcondenser coil.
 3. The portable dehumidifier of claim 1, wherein thefirst microchannel condenser coil outputs a refrigerant flow as asubcooled liquid.
 4. The portable dehumidifier of claim 3, wherein therefrigerant flow travels to the evaporator.
 5. The portable dehumidifierof claim 1, wherein the second microchannel condenser coil receives aninput of refrigerant from the compressor as a superheated vapor.
 6. Theportable dehumidifier of claim 5, wherein the compressor is located inthe airflow between the evaporator and the plurality of microchannelcondenser coils.
 7. The portable dehumidifier of claim 1, wherein theplurality of microchannel condenser coils are made of aluminum.
 8. Aportable dehumidifier, comprising: a cabinet comprising: an airflowinlet; an airflow outlet; a compressor coupled to an evaporator; a firstmicrochannel condenser coil coupled to the evaporator via a subcooledliquid line; and a second microchannel condenser coil coupled to thecompressor via a superheated vapor line and to the first microchannelcondenser coil via a condenser connection line; wherein the compressoris configured to receive refrigerant from the evaporator, the secondcondenser coil is configured to receive the refrigerant from thecompressor via the superheated vapor line, the first condenser coil isconfigured to receive the refrigerant from the first condenser coil viathe condenser connection line, and the evaporator is configured toreceive the refrigerant from the first condenser coil via the subcooledliquid line; and a fan located adjacent to the airflow outlet, the fanconfigured to generate an airflow that flows into the cabinet throughthe airflow inlet and out of the cabinet through the airflow outlet, theairflow flowing through the evaporator and the first and secondmicrochannel condenser coils in order to provide dehumidification to theairflow.
 9. The portable dehumidifier of claim 8, wherein an input ofthe first microchannel condenser coil receives a refrigerant flow froman output of the second microchannel condenser coil.
 10. The portabledehumidifier of claim 8, wherein the first microchannel condenser coiloutputs a refrigerant flow as a subcooled liquid.
 11. The portabledehumidifier of claim 10, wherein the refrigerant flow travels to theevaporator.
 12. The portable dehumidifier of claim 8, wherein the secondmicrochannel condenser coil receives an input of refrigerant from thecompressor as a superheated vapor.
 13. The portable dehumidifier ofclaim 12, wherein the compressor is located in the airflow between theevaporator and the plurality of microchannel condenser coils.
 14. Theportable dehumidifier of claim 8, wherein the plurality of microchannelcondenser coils are made of aluminum.
 15. A portable dehumidifier,comprising: a compressor coupled to an evaporator; a first microchannelcondenser coil coupled to the evaporator via a subcooled liquid line;and a second microchannel condenser coil coupled to the compressor via asuperheated vapor line and to the first microchannel condenser coil viaa condenser connection line; wherein the compressor is configured toreceive refrigerant from the evaporator, the second condenser coil isconfigured to receive the refrigerant from the compressor via thesuperheated vapor line, the first condenser coil is configured toreceive the refrigerant from the first condenser coil via the condenserconnection line, and the evaporator is configured to receive therefrigerant from the first condenser coil via the subcooled liquid line;and a fan located adjacent to an airflow outlet, the fan configured togenerate an airflow that flows into the portable dehumidifier through anairflow inlet and out of the portable dehumidifier through the airflowoutlet, the airflow flowing through the evaporator and the first andsecond microchannel condenser coils in order to provide dehumidificationto the airflow.
 16. The portable dehumidifier of claim 15, wherein aninput of the first microchannel condenser coil receives a refrigerantflow from an output of the second microchannel condenser coil.
 17. Theportable dehumidifier of claim 15, wherein the first microchannelcondenser coil outputs a refrigerant flow as a subcooled liquid.
 18. Theportable dehumidifier of claim 17, wherein the refrigerant flow travelsto the evaporator.
 19. The portable dehumidifier of claim 15, whereinthe second microchannel condenser coil receives an input of refrigerantfrom the compressor as a superheated vapor.
 20. The portabledehumidifier of claim 19, wherein the compressor is located in theairflow between the evaporator and the plurality of microchannelcondenser coils.